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6 <title>Petter Reinholdtsen: Magnetstripeinnhold i billetter fra Flytoget og Hurtigruten
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15 <a href=
"http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen
</a>
23 <div class=
"title">Magnetstripeinnhold i billetter fra Flytoget og Hurtigruten
</div>
24 <div class=
"date">21st May
2010</div>
25 <div class=
"body"><p>For en stund tilbake kjøpte jeg en magnetkortleser for å kunne
26 titte på hva som er skrevet inn på magnetstripene til ulike kort. Har
27 ikke hatt tid til å analysere mange kort så langt, men tenkte jeg
28 skulle dele innholdet på to kort med mine lesere.
</p>
30 <p>For noen dager siden tok jeg flyet til Harstad og Hurtigruten til
31 Bergen. Flytoget fra Oslo S til flyplassen ga meg en billett med
32 magnetstripe. Påtrykket finner jeg følgende informasjon:
</p>
35 Flytoget Airport Express Train
37 Fra - Til : Oslo Sentralstasjon
40 Herav mva.
8,
00% : NOK
12,
59
42 Til - Fra : Oslo Lufthavn
44 Gyldig Fra-Til :
08.05.10-
07.11.10
45 Billetttype : Enkeltbillett
47 102-
1015-
100508-
48382-
01-
08
50 <p>På selve magnetstripen er innholdet
51 <tt>;E?+
900120011=
23250996541068112619257138248441708433322932704083389389062603279671261502492655?
</tt>.
52 Aner ikke hva innholdet representerer, og det er lite overlapp mellom
53 det jeg ser trykket på billetten og det jeg ser av tegn i
54 magnetstripen. Håper det betyr at de bruker kryptografiske metoder
55 for å gjøre det vanskelig å forfalske billetter.
</p>
57 <p>Den andre billetten er fra Hurtigruten, der jeg mistenker at
58 strekkoden på fronten er mer brukt enn magnetstripen (det var i hvert
59 fall den biten vi stakk inn i dørlåsen).
</p>
61 <p>Påtrykket forsiden er følgende:
</p>
69 Bookingno: SAX69
0742193
71 Dep:
09.05.2010 Arr:
12.05.2010
76 <p>På selve magnetstripen er innholdet
77 <tt>;
1316010007421930=
00000000000000000000?+E?
</tt>. Heller ikke her
78 ser jeg mye korrespondanse mellom påtrykk og magnetstripe.
</p>
81 <div class=
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